Video: Dubai takes risk on new rail

Dubai has officially inaugurated its new, state-of-the-art metro rail system, in the latest effort to jumpstart the city's battered economy.

Several dignitaries, including Sheikh Mohammed bin Rashid al-Maktoum, the vice president of the United Arab Emirates and Dubai's ruler, were on hand for the unveiling of the city's latest innovation in technology.

But the system has already hit some speed bumps with the planned opening of several metro stations delayed and an estimated price tag of $7.5bn.

As Al Jazeera's Owen Fay reports, those obstacles could cause major trouble for Dubai's economy.